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Subtraction by Counting Up Worksheet

Mental maths lesson 5: Subtract by counting up · Set 929 · 40 questions
TalentJR

How to do it in your head (Count up): Start at the smaller number. Jump to the next ten, then the next hundred, then to the bigger number. Add up all the jumps.

NameDateTime takenScore ___ / 40
  1. 1.204 − 198 =
  2. 2.100 − 68 =
  3. 3.1005 − 997 =
  4. 4.313 − 295 =
  5. 5.99 − 60 =
  6. 6.125 − 77 =
  7. 7.219 − 189 =
  8. 8.212 − 179 =
  9. 9.1010 − 991 =
  10. 10.89 − 66 =
  11. 11.521 − 498 =
  12. 12.126 − 97 =
  13. 13.117 − 75 =
  14. 14.108 − 62 =
  15. 15.1024 − 989 =
  16. 16.85 − 66 =
  17. 17.64 − 36 =
  18. 18.67 − 48 =
  19. 19.201 − 188 =
  20. 20.317 − 287 =
  21. 21.307 − 296 =
  22. 22.111 − 95 =
  23. 23.223 − 184 =
  24. 24.305 − 276 =
  25. 25.316 − 287 =
  26. 26.92 − 64 =
  27. 27.129 − 96 =
  28. 28.65 − 48 =
  29. 29.524 − 498 =
  30. 30.307 − 277 =
  31. 31.527 − 494 =
  32. 32.107 − 68 =
  33. 33.226 − 195 =
  34. 34.110 − 85 =
  35. 35.71 − 43 =
  36. 36.117 − 88 =
  37. 37.1001 − 987 =
  38. 38.530 − 497 =
  39. 39.83 − 57 =
  40. 40.1016 − 983 =

Answer key

  1. 6
  2. 32
  3. 8
  4. 18
  5. 39
  6. 48
  7. 30
  8. 33
  9. 19
  10. 23
  11. 23
  12. 29
  13. 42
  14. 46
  15. 35
  16. 19
  17. 28
  18. 19
  19. 13
  20. 30
  21. 11
  22. 16
  23. 39
  24. 29
  25. 29
  26. 28
  27. 33
  28. 17
  29. 26
  30. 30
  31. 33
  32. 39
  33. 31
  34. 25
  35. 28
  36. 29
  37. 14
  38. 33
  39. 26
  40. 33

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